Albert s



ATWOOD, OF

' MANSFIELD, connnorncur.

Letters Patent No. 100,478, dated March 1, 1870.

mnovnmnn'r m )IHRASHING-MACBINES.

Mot-o The Schedule referred to in these LettersPatent and making part of the same To all whom it may concern;

t Be it known that we, ALBERT S. Wnr'r'rEMonn, of Willimantic, in the county of Windham, and State of Connecticut, and J on E. A'rwoon, of Mansfield, in the county of Tolland,same State, have invented a new and useful ImprovementinThrashingeMachines; of which the following is a full,'clear, and exact description, reference being bad to the accompanying drawings forming part of this specification, and in whichr Figure 1 represents a scetional elevation of a ti ashing-maohiue, taken transversely through its beatershaft, and v Figure 2 a plan of saidmachineL V Similar letters of reference indicate corresponding parts. 7

a This invention relates to graiu-thrashers in which rotary heaters, as contradistinghished from rotary flails, are used, and theinventiou consists of a comb.i-'

nation with a bearing whichls just out of reach of the heaters, so that the'latter may operate upon the heads of the grain," of a series of rotary heaters;arranged or shaped so that their tlirashing-surtiu-es lie tangential to weircle outside of the heater-slant, but concentric therewith. T e 4 By this combination and arrangementof parts the grain is efl'cctuallyand rapidly thrashed without injury to the straw, and without danger of the straw being drawn around thebeater-shaft, aml in this-connection the tangential arrangement; of the heaters is an important or essential feature of the invention.

.Mere straight or radial heaters would have a tendency to draw"the' straw around the la-ater-shait,

which is avoided by the tangential arrangement of y the heaters, especially when taken in combination with the thrashing-bearing or support, arranged as described. I

Rotary flails, as in a tln'ashing-machine previously patented to the hereinbefore-nanled A; S. \VHITTE- "MORE have before been used 'in similar relation to a tlu'asliing-sumiort or hearing for the grain, but never beatcrs,'0r heaters having a tangential arrangement,

, as described, that we are aware-of, and a fixed-heater action is distinct from that-of a loose flail;

Referring to the accompanying drawings A represents theframe or box portion of the machine, carrying on, its top, bearings, .a a, for support of the cross-beater shaft,- B,,which has secured to it any number Vofbeaters, O 0, arranged side by side, and set successively, the one in, advance or in rear of the other. These heaters, w ch revolve as beater-shaft. ry to the straw prevented, and the machine kept in indicated by the arrow 9;, are shaped or arranged tolie tangential to a circle outside of-the shaft, but concenout of the reach ot'the heaters, on the front side or edge. of their travel, and below the level of the beatershaft. v

E is the screen or guide, which serves to receive the straw aml grain after they have passed overthe thrashlug-bearing l), and to conduct the straw out of the way, while the kernels, or the greater portion of them, pass through-said screen. 7 p I In the operation of the machine, the grain may be fed over the bearingD, cit-her loose orin bundles, with the straw parallel with the planes of rotation of the heaters, the kernels being thrashed from the heads as the latter project over the edge of the hearing D, ai her which the straw is pushed forward and allowed to fall'over said bearing, and so on indefinitely, or as the grain is supplied to the machine. The tangential arrangement of the heaters prevents their entanglement with the straw, or the lapping of thelatter around the beater-shaft. This result, how"- ever, is still more perfectly secured by the combination of said tangential heaters with the thrashingbeari'ng or support arranged below the level of the In this way power is economized, injufree working order. Also, the tangential construction of the heaters secures a'more direct or straighttln'ashing action on the grain, in line, or thereabouts, with the feeding-surtace of the bearing over which the heads of the grain areprojected to effect the thrashing, as described.

What is here claimed, and desired to be secured by Letters Patent, is-- The combination of the heaters (i 0, arranged tangentially to a circle around and in advance of the axis, with the grain-support or bearing 1) outside of the reach of the heaters, essentially as herein shown and described.

' A S. WHITTEMORE.

JOHN E. A'LWOOI).

Witnesses:

J. R. Anson, ALI-RED HALVEY.

fitnitrdg tatrt fitted with, 

